In all of my universe I have seen no law of nature, unchanging and inexorable. This universe presents only changing relationships which are sometimes seen as laws by short-lived awareness. These fleshy sensoria which we call self are ephemera withering in the blaze of infinity, fleeting aware of temporary conditions which confine our activities and change as our activities change. If you must label the absolute, use its proper name: Temporary.

Think on it, Chani: the princess will have the name, yet she'll live as less than a concubine - never to know a moment of tenderness from the man to whom she's bound. While we, Chani, we who carry the name of concubine - history will call us wives.

Education is no substitute for intelligence. That elusive quality is defined only in part by puzzle-solving ability. It is in the creation of new puzzles reflecting what your senses report that you round out the definitions.

Something cannot emerge from nothing.

We accept too damned many things on the explanations of people who could have good reasons for lying.

Every civilization depends upon the quality of the individuals it produces.

We can say that Maud'Dib learned rapidly because his first training was in how to learn. And the first lesson of all was the basic trust that he could learn.